Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Barbara J Gionet Hasson, NP

Individual provider Gerontology Nurse Practitioner · NPI 1740554609

Barbara J Gionet Hasson, NP is a Gerontology Nurse Practitioner in Mill Valley, California. Licensed in California. Registered with an NPI since 2012.

Licensed in
CA
In the registry since
2012
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

616 Eastwood Way
Mill Valley, CA 94941-3903
Phone: (415) 383-1692
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence 684122 (CA)

Record details

NPI number1740554609
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedFebruary 23, 2012
Last updated in NPPESFebruary 23, 2012